You are usually ready when the urgent paperwork is done and you can explain your accounts in your own words. A simple test: can you say what you own, what it costs in fees, what you need from it each year, and what you would do if it fell by a third? If yes, changes become decisions rather than reactions.
It also helps to write down the decisions you are postponing and a date to revisit each one, such as after the first tax season. A list turns “I should be doing something” into a plan, and it gives you a polite answer for anyone pressing for a quick yes: “That is on my list for later in the year.” Family members who mean well can be as insistent as salespeople, and the same answer works for them.
Big changes are also easier with help you chose yourself. A fee-only, fiduciary planner paid by the hour can review a plan without selling you a product. If you inherited retirement accounts, read up on inherited IRA rules before any withdrawal.